CONFIG_ARM64_SW_TTBR0_PAN: Emulate Privileged Access Never using TTBR0_EL1 switching

General informations

The Linux kernel configuration item CONFIG_ARM64_SW_TTBR0_PAN:

• prompt: Emulate Privileged Access Never using TTBR0_EL1 switching
• type: bool
• depends on: ! CONFIG_KCSAN
• defined in arch/arm64/Kconfig
• found in Linux kernels: 4.10–4.20, 5.0–5.19, 6.0–6.12, 6.13-rc+HEAD

Help text

Enabling this option prevents the kernel from accessing user-space memory directly by pointing TTBR0_EL1 to a reserved zeroed area and reserved ASID. The user access routines restore the valid TTBR0_EL1 temporarily.

Hardware

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This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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